1998

6.2

2006

7.1

2000

5.0

2006

5.9

2019

4.5

1997

6.5

2018

7.6

2014

5.7

1999

5.8

1991

6.4

2005

4.2

2004

5.0

1999

7.2

2012

7.5

2006

0.0

2002

8.3

2002

0.0